CN107078522A

CN107078522A - System and method for preventing wireless charging interconnection

Info

Publication number: CN107078522A
Application number: CN201580053350.7A
Authority: CN
Inventors: W·H·冯诺瓦克三世; A·A·沙里夫; M·Y-H·蔡
Original assignee: Qualcomm Inc
Current assignee: Qualcomm Inc
Priority date: 2014-10-03
Filing date: 2015-09-15
Publication date: 2017-08-18
Anticipated expiration: 2035-09-15
Also published as: JP2017534234A; US20160099604A1; CN107078522B; US10270277B2; EP3202009A1; CN111525710B; US20180069419A1; JP6625623B2; US9762085B2; CN111525710A; EP3202009B1; WO2016053616A1

Abstract

There is provided a kind of system and method for being used to charge to rechargeable device.System can include wireless charger, including be arranged to produce the wireless power transmitter of wireless charging electric field at least one charged area.Wireless charger further comprises the transceiver for being arranged to communicate with rechargeable device.Wireless charger further comprises controller, is arranged to be based at least partially on the comparison for detecting power level and indicating the predeterminated level of saturation of wireless charger, promotes to avoid the interconnection of rechargeable device and wireless charger and at least one other wireless charger by initiating the disconnecting for communication link between wireless charger and rechargeable device.

Description

System and method for preventing wireless charging interconnection

Technical field

The present invention relates generally to wireless power.More specifically, this disclosure relates to in wireless power receiver and wirelessly System, the method and apparatus of communication are set up between power transmitter, wherein receiver can be located at the wireless charging area of transmitter In domain, but the communication with one or more extra wireless power transmitters can be set up.

Background technology

Electronic circuitries increase via rechargeable batteries to number and various.These devices include movement Phone, portable music player, laptop computer, tablet PC, computer peripheral devices, communicator are (such as blue Tooth device), digital camera, audiphone, etc..Although battery technology is improved, battery powered electronic installation is increasingly required And a greater amount of electric power are consumed, therefore usually require that and recharge.Rechargeable device is generally via by being physically attached to electricity The cable in source or the wired connection of other similar connections device and be electrically charged.Cable and similar connector can be sometimes inconvenient Or it is troublesome and with other shortcomings.Electric power can be transmitted in free space to be used with to rechargeable electronics The wireless charging system that device charges or provides electric power to electronic installation can overcome some shortcomings of wired charging scheme.Just For this, it is desirable to transmit efficiently and safely electric power to the Wireless power transmission system and method for electronic installation.

The content of the invention

System, each embodiment of method and apparatus within the scope of the appended claims each has some aspects, Required attribute described herein is merely responsible for without independent one.Scope of the following claims is not limited to, is described herein Some features protruded.

The details of one or more embodiments of the theme described in this manual is set forth in the following drawings and explanation In book.Other features, aspect and advantage will become obvious from specification, drawings and the claims.Note the relative of the following drawings Size can be not drawn to scale.

An aspect of this disclosure provides a kind of wireless charger for being used to wirelessly charge to rechargeable device.Wirelessly Charger includes wireless power antenna.Wireless charger further comprises coupled to wireless power antenna and is arranged to The wireless power transmitter of wireless charging electric field is produced at least one charged area.Wireless charger further comprises communication antenna And be coupled to communication antenna and be arranged to the transceiver that is communicated via communication antenna with rechargeable device.Wireless charging Device further comprises controller, and controller is configured to avoid rechargeable device and nothing using at least one following The interconnection of line charger and at least one other wireless charger：(i) it is based at least partially at least one of following and selects Receive to selecting property or refuse the data cube computation between wireless charger and rechargeable device：(a) region of rechargeable device with The comparison for freely measuring (free amount) of at least one charged area；Or (b) determines the request for enabling data cube computation Whether receive in predetermined in time window；Or (c) determines whether to have been received that before for enabling data cube computation Any request；Or (d) is determined for which request for enabling data cube computation with most strong data-signal；Or (ii) is at least It is based in part on the comparison for detecting predeterminated level of the power level with indicating saturation of wireless charger and promotes wireless charging Device disconnects connection from rechargeable device；Or (iii) opens wireless after corresponding random time section has been pass by Charger；Or (iv) is if the instruction of the rechargeable device detected receives time window at least one charged area The delay of mouth is less than predetermined value；Or its any combination.

Another aspect of the present disclosure provides a kind of wireless charger for wirelessly being charged to rechargeable device.Wirelessly Charger includes being used for the device that wireless charging electric field is produced at least one charged area.Wireless charger further comprises using In the device communicated with rechargeable device.Wireless charger is further comprised for being promoted by using at least one following Avoid rechargeable device and the device of the interconnection of wireless charger and at least one other wireless charger：(i) at least portion Ground is divided optionally to be received based at least one following or refuse the data between wireless charger and rechargeable device Connection：(a) comparison freely measured in the region of rechargeable device and at least one charged area；Or (b) is determined for enabling number Whether receive according to the request of connection in predetermined in time window；Or whether had received that before (c) determination for enabling number According to any request of connection；Or (d) is determined for which request for enabling data cube computation with most strong data-signal；Or (ii) It is based at least partially on the comparison for detecting predeterminated level of the power level with indicating saturation of wireless charger and promotes wireless Charger disconnects connection from rechargeable device；Or (iii) is opened after corresponding random time section has been pass by Wireless charger, or (iv) is if the instruction of the rechargeable device detected receives the time at least one charged area The delay of window is less than predetermined value；Or its any combination.

Another aspect of the present disclosure provides a kind of non-transient computer-readable media including code, upon being performed generation Code causes wireless charger to produce wireless charging electric field at least one charged area.Medium further comprises making upon being performed Obtain the code that wireless charger communicates with rechargeable device.Medium further comprises upon being performed so that wireless charger passes through Promote to avoid rechargeable device and wireless charger and at least one other wireless charger using at least one following Interconnection code：(i) it is based at least partially at least one following and optionally receives or refuse in wireless charging Data cube computation between electrical equipment and rechargeable device：(a) region of rechargeable device and at least one charged area are freely measured Comparison；Or (b) determines whether the request for enabling data cube computation receives in time window in predetermined；Or (c) determines it The preceding request whether having received that for enabling data cube computation；Or (d) determines which request for enabling data cube computation has There is most strong data-signal；Or (ii) be based at least partially on wireless charger detect power level with indicating the predetermined of saturation The comparison of level and promote wireless charger to disconnect connection from rechargeable device；Or (iii) is in corresponding random time section Wireless charger is opened after having pass by；Or (iv) is if detect rechargeable device at least one charged area Indicate to be less than predetermined value, then delay receives time window；Or its any combination.

Another aspect of the present disclosure provides a kind of method for wirelessly being charged to rechargeable device.Method is included in Wireless charging electric field is produced at least one charged area.Wireless charging electric field includes multiple power signals.Method further comprise with Rechargeable device communicates.Method further comprises promoting to avoid rechargeable device and wireless charger and at least one other nothing The interconnection of line charger, wherein rechargeable device receive work(from wireless charger or at least one other wireless charger Rate and communicated simultaneously with another or at least one other wireless charger of wireless charger.Promote to avoid interconnection from making With at least one following：Detect the comparison of predeterminated level of the power level with indicating saturation；Or when corresponding random Between section pass by after open wireless charger；The region of rechargeable device and at least one charged area are freely measured Compare；Or determine whether the request for enabling data cube computation receives in time window in predetermined；Or if detect Instruction of the rechargeable device at least one charged area then postpone to receive time window less than predetermined value；Or determine Any request for enabling data cube computation whether is had received that before；And determine for enable data cube computation which please Ask with most strong data-signal；Or its any combination.

Another aspect of the present disclosure provides a kind of wireless charger for wirelessly being charged to rechargeable device.Wirelessly Charger includes being arranged to the wireless power transmitter that wireless charging electric field is produced at least one charged area.Wireless charging Electrical equipment further comprises the transceiver for being arranged to communicate with rechargeable device.Wireless charger further comprises controller, What controller was configured to be based at least partially on wireless charger detects transmit power level with indicating at least one The comparison of at least one predeterminated level of individual saturation conditions and initiate the communication link between wireless charger and rechargeable device Disconnect and promote to avoid rechargeable device and wireless charger and at least one other wireless charger intersect company Connect.

Another aspect of the present disclosure promotes to avoid the friendship in the rechargeable device communicated with wireless charger there is provided a kind of The method for pitching connection.Method includes the transmission power level of detection wireless charger.Method further comprises the hair that will be detected Power level is penetrated with indicating that at least one predeterminated level of at least one saturation conditions is compared.Method further comprises at least It is based in part on and initiates the communication link between wireless charger and rechargeable device with the presence or absence of at least one saturation conditions Disconnect.

Another aspect of the present disclosure provides a kind of wireless charger, including for being produced at least one charged area The device of wireless charging electric field.Wireless charger further comprises the device for being communicated with rechargeable device.Wireless charger enters What one step included being used for being based at least partially on wireless charger detects transmission power with indicating at least one saturation conditions The comparison of at least one predeterminated level and by initiate the communication link between wireless charger and rechargeable device disconnection connect Connect and promote to avoid rechargeable device and the device of the interconnection of wireless charger and at least one other wireless charger.

Another aspect of the present disclosure provides a kind of non-transient computer-readable media, including causes upon being performed wireless Charger produces the code of wireless charging electric field at least one charged area.When code is performed further such that wireless charging Electrical equipment communicates with rechargeable device.When code is performed further such that wireless charger is to be based at least partially on wireless charging Electrical equipment detect transmission power level with indicate at least one saturation conditions at least one predeterminated level comparison and pass through Initiate the disconnecting for communication link between wireless charger and rechargeable device and promote to avoid rechargeable device and wireless The interconnection of charger and at least one other wireless charger.

Another aspect of the present disclosure promotes to avoid intersecting for the rechargeable device communicated with wireless charger there is provided a kind of The method of connection.This method includes：It is each in multiple wireless chargers of common power source circuit for being operably coupled to Wireless charger, for providing power and the unlatching of (ii) wireless charger to wireless charger via common power source circuit at (i) Between period and random value is set.Method further comprises, once provide power to common power source circuit, then it is right at its The random time section answered opens each wireless charger in multiple wireless chargers after having pass by.

Another aspect of the present disclosure promotes to avoid intersecting for the rechargeable device communicated with wireless charger there is provided a kind of The method of connection.Method includes determining the charged area of wireless charger.Method further comprises, wireless for attempting to connect to Each rechargeable device of charger, compares the region of rechargeable device and freely measuring for charged area.Method further comprises It is at least partially in response to compare and receives or refuse the connection between rechargeable device and wireless charger.Method is further Including in response to receiving connection between rechargeable device and wireless charger or in response in rechargeable device and wireless The termination connected between charger, modification freely receives the amount of the charged area of rechargeable device.

Another aspect of the present disclosure promotes to avoid intersecting for the rechargeable device communicated with wireless charger there is provided a kind of The method of connection.Method includes limiting receives time window for wireless charger, receives time window positioned at wireless charging Rechargeable device in the charged area of electrical equipment detects appearance after the power from wireless charger, receives time window tool Have and apply to wireless charging the first end point at the first predetermined time amount in power, and apply in power to wireless charging The second end points after electrical equipment at the second predetermined time amount.Method further comprises receiving for enabling number from rechargeable device According to the request of connection.Method further comprises determining that receiving whether to ask in time window.Method further comprises ringing Ying Yu receives or refused data cube computation receiving whether to occur asking in time window.

Another aspect of the present disclosure, which is provided, a kind of to be promoted to avoid to intersect company with the rechargeable device of wireless device The method connect.Method includes limiting receives time window for wireless charger, receives time window positioned at wireless charging Rechargeable device in the charged area of device detects appearance after the power from wireless charger, and receiving time window has First end point after power is applied with to wireless charger at the first predetermined time amount, and applied to wireless charger The second end points at the second predetermined time amount after power is added.Method further comprises receiving for making from rechargeable device The request of energy data cube computation.Method further comprise detection rechargeable device whether the finger in the charged area of wireless charger Show, and will indicate to be compared with certain level.Method further comprises if the instruction detected is inconclusively on can Charging device receives time window whether in the charged area of wireless charger with predetermined time quantum delay.Method enters one Whether step includes determining to ask to appear in receive in time window.Method further comprises whether appearing in receiving in response to request Receive in time window or break off relations data cube computation.

Another aspect of the present disclosure promotes to avoid intersecting for the rechargeable device communicated with wireless charger there is provided a kind of The method of connection.Method includes receiving the request for enabling data cube computation from rechargeable device.Method is further comprised determining that Before it have received request from rechargeable device, any request whether is had received that before.Method further comprises：Such as Fruit not yet receives request, then receives data cube computation before before it have received request from rechargeable device.

Another aspect of the present disclosure promotes to avoid intersecting for the rechargeable device communicated with wireless charger there is provided a kind of The method of connection.Method includes sending request to enable the data cube computation with rechargeable device from wireless charger.Method enters one Whether step causes interconnection including the use of rechargeable device with connection before determining rechargeable device to wireless charger.Side Method further comprises if connection before causes interconnection and prevents the initiation (such as stop or do not initiate) of request.

Another aspect of the present disclosure promotes to avoid intersecting for the rechargeable device communicated with wireless charger there is provided a kind of The method of connection.Method includes receiving from one or more rechargeable devices asks for enabling the one or more of data cube computation Ask.Which most strong data-signal of the request with one or more requests is method further comprise determining that.Method is further wrapped Include the most strong data-signal received corresponding to one or more requests.

Another aspect of the present disclosure provides a kind of wireless charger for wirelessly being charged to rechargeable device.Wirelessly Charger includes coupled to wireless power antenna and is arranged at least one charged area produce wireless charging electric field Wireless power transmitter.Wireless charger further comprises coupled to communication antenna and is arranged to via foundation in transceiver Communication channel between rechargeable device and the transceiver wirelessly communicated with rechargeable device.Transceiver be arranged to from Rechargeable device receives the one or more requests for asking to change of the transmission power level for wireless power transmitter.Nothing Line charger further comprises controller, controller be configured for institute's transmission power level of wireless power transmitter and Receive the information at least one saturation conditions for indicating wireless power transmitter.Controller is further configured at least partly Transmitting for wireless power transmitter of the ground based on the information for indicating at least one saturation conditions and from rechargeable device Device power level asks the one or more requests changed and causes the communication channel between transceiver and rechargeable device Disconnect.

Another aspect of the present disclosure further comprises providing a kind of chargeable dress for promoting to avoid communicating with wireless charger The method for the interconnection put.Method includes institute's transmission power level based on wireless power transmitter and receives instruction wireless charging The information of at least one saturation conditions of the wireless power transmitter of electrical equipment.Method further comprises being based at least partially on instruction The information of at least one saturation conditions and by institute of the rechargeable device for institute's transmission power level of wireless power transmitter Ask one or more requests for changing and cause disconnecting between wireless charger and rechargeable device communication channel.

Brief description of the drawings

Fig. 1 is the functional block diagram of example wireless power transmission system according to an exemplary embodiment of the present invention.

Fig. 2 is showing in the wireless power transmission system that can be used for Fig. 1 according to each of the invention exemplary embodiment The functional block diagram of example property part.

Fig. 3 is radiating circuit or the reception of Fig. 2 according to an exemplary embodiment of the present invention including transmitting or reception antenna The schematic diagram of a part for circuit.

Fig. 4 is the transceiver in the wireless power transmission system according to an exemplary embodiment of the present invention that can be used for Fig. 1 Functional block diagram.

Fig. 5 is the receiver in the wireless power transmission system according to an exemplary embodiment of the present invention that can be used for Fig. 1 Functional block diagram.

Fig. 6 can be used for the schematic diagram of a part for the radiating circuit in Fig. 4 transmitter circuit.

Fig. 7 A are the functional block diagrams of receiver according to an exemplary embodiment of the present invention when there is multiple transceivers.

Fig. 7 B schematically show the example of the interconnection among four receivers during in the presence of two transceivers.

Fig. 7 C are the block diagrams of the wireless charging system of the acceptor circuit of the transmitter circuit and Fig. 3 that can include Fig. 4.

Fig. 8 is led between wireless charger and rechargeable device, such as Fig. 7 A wireless charger and rechargeable device Believe to set up the sequential and signal flow graph of connection between wireless charger and rechargeable device.

Fig. 9 is the rechargeable device for having promoted to avoid communicating with wireless charger according to said some embodiments The flow chart of exemplary first analytic method of interconnection.

Figure 10 is the rechargeable device for having promoted to avoid communicating with wireless charger according to said some embodiments Interconnection the second analytic method example flow chart.

Figure 11 is the chargeable dress for having promoted to avoid communicating with wireless charger according to some embodiments described herein The flow chart of the example of 3rd analytic method of the interconnection put.

Figure 12 is the chargeable dress for having promoted to avoid communicating with wireless charger according to some embodiments described herein The flow chart of the example of 4th analytic method of the interconnection put.

Figure 13 is the chargeable dress for having promoted to avoid communicating with wireless charger according to some embodiments described herein The flow chart of the example of 5th analytic method of the interconnection put.

Figure 14 is the chargeable dress for having promoted to avoid communicating with wireless charger according to some embodiments described herein The flow chart of the example of 6th analytic method of the interconnection put.

Figure 15 is the chargeable dress for having promoted to avoid communicating with wireless charger according to some embodiments described herein The flow chart of the example of 7th analytic method of the interconnection put.

Each feature shown in accompanying drawing can be drawn with not to scale.Therefore, the size of each feature can be in order to clear Chu and arbitrarily increase or reduce.In addition, some accompanying drawings can not describe all the components of given system, method or apparatus.Most Eventually, throughout specification and drawings, identical reference numeral can be to indicate identical feature.

Embodiment

In some wireless power systems, and as described below, transmitter and receiver are with except for transimission power Frequency outside frequency for communication.In certain embodiments, it is desirable to set up independently of the wireless energy for transimission power So-called out-of-band communication channel.Out-of-band communication channel is useful for reducing the complexity with interior transmitter and acceptor circuit 's.Because having different characteristics with internal power transmission and out-of-band communication channel, receiver can be for wireless from transmitter Outside the scope of power supply but in the range of for out-of-band communication.As a result, when there is multiple transmitters in given space, Interconnection can be caused, its control signal is connected to separately by wherein power transmitter transmit power to power receiver One power receiver, or power receiver are powered by power transmitter but with the control for being connected to another power transmitter Signal.The situation can cause unstable operation, loss in efficiency, and bad Consumer's Experience.Therefore, it is intended that avoiding the friendship Fork connection detects and remedies the interconnection, and initiates suitable communication between the various devices.

Below in conjunction with accompanying drawing illustrate detail specifications be intended to as exemplary embodiment of the present description explanation and It is not intended to and only shows and can wherein implement embodiments of the invention.Throughout " exemplary " meaning of term used in the specification " being used as example, example or explanation ", and is not necessarily configured to preferred or favourable on other exemplary embodiments Embodiment.Detail specifications in order to the purpose of the complete understanding to exemplary embodiment of the present is provided and including specific thin Section.In some cases, some devices be show in block form.

Be wirelessly transmitted power can be related to by with electric field, magnetic field, electromagnetic field or other associated any form of energy From transmitter transmit to receiver and and be not used physics electric conductor (for example power can be transmitted by free space).Output Power into wireless field (such as magnetic field) can be received by " reception antenna ", catch or couple to realize power transmission.

Fig. 1 is the functional block diagram of example wireless power transmission system 100 according to an exemplary embodiment of the present invention.Input Power 102 can provide to antenna 104 to produce the field 105 for being used for providing energy transmission from power supply (not shown).Receive Device 108 is coupled to field 105 and produces power output 110 by the device coupled to power output 110 (not shown Go out) store or consume.Transmitter 104 and receiver 108 are separated with distance 112.In one exemplary embodiment, root Transmitter 104 and receiver 108 are configured according to the relation of phase mutual resonance.When the resonant frequency and transmitter 104 of receiver 108 Resonant frequency it is substantially the same or closely when, reduce the transmission loss between 104 and receiver 108.Thus, With big coil can be required very close to the simple inductive scheme of (such as millimeter) on the contrary, nothing can be provided on bigger distance Linear heat generation rate is transmitted.Therefore resonant inducing coupling technique can allow to improve efficiency and on various distances and using various Induction coil is configured and power transmission.

When receiver 108 is located at as in the energy field 105 produced by transmitter 104, receiver 108 can receive work( Rate.Field 105 corresponds to can wherein be caught the region that energy is exported by transmitter 104 by receiver 108.Transmitter 104 can With including the transmitting antenna 114 for exporting energy transmission.Receiver 108 further comprises being used to transmit from energy receiving or catching Catch the reception antenna 118 of energy.In some cases, field 105 can correspond to " near field " of transmitter 104.Near field can be right Ying Yu is wherein present in transmitting antenna 114 caused by electric current and electric charge minimally from the strong anti-of the emittance of transmitting antenna 114 Answer the region of field.Near field can correspond to about wavelength (or its sub-fraction) in transmitting antenna 114 in some cases Interior region.Reception antenna 118 can be coupled to by the major part of energy in the field 105 by transmitting antenna 114 rather than incited somebody to action Most of energy transmission is transmitted to far field so as to occur efficient energy in electromagnetic wave.Transmitting and the basis of reception antenna 114 and 118 Using and device associated there and designed size.When in field 105, in transmitting antenna 114 and day can be received Developed between line 118 " CGCM ".

In one embodiment, transmitter 104 can be arranged to export the magnetic field changed over time, with corresponding to The frequency of the resonant frequency of transmitting antenna 114.When in receiver on the scene 105, the magnetic field changed over time can receive day Sensing produces electric current in line 118.If as described above, reception antenna 118 be arranged to it is humorous with the frequency of transmitting antenna 118 Shake, then can efficiently transmission energy.Sense in reception antenna 118 generation AC signals can as described above rectification to produce DC signals for charging or powering to load can be provided.

Fig. 2 is showing according to the wireless power transmission system 100 that can be used for Fig. 1 of each of the invention exemplary embodiment The functional block diagram of example property part.In wireless power transmission system 200, transmitter 204 can include transmitting circuit 206, It can include oscillator 222, drive circuit 224 and wave filter and match circuit 226.Oscillator 222 can be configured The signal of frequency, such as 468.75KHz, 6.78MHz or 13.56MHz needed for for producing, it can believe in response to FREQUENCY CONTROL Numbers 223 and be adjusted.Oscillator signal can be provided to drive circuit 224, and it is arranged to such as transmitting antenna 214 Resonant frequency driving radiating circuit 214.Drive circuit 224 can be arranged to receive square wave simultaneously from oscillator 222 Export the switching amplifier of sine wave.For example, drive circuit 224 can be E class A amplifier As.Can also include wave filter and With circuit 226 to filter out harmonic wave or other undesirable frequencies, and the impedance of transmitter 204 is matched with transmitting antenna 214. As the result of driving transmitting antenna 214, transmitter 204 can be wireless in the case where being enough to charge electronic devices or the level of power supply Ground power output.As an example, the power provided can for example 300 milliwatts to 10-20 watts magnitude with to tool The different device for having different capacity demand is powered or charged.Higher or lower power level can also be provided.

Receiver 208 can include receiving circuit device 210, and it can include match circuit 232 and rectifier and open Powered-down road 234 from AC power inputs to produce DC power outputs to be charged to battery 236 as shown in Figure 2 or to coupled to connecing The device (not shown) for receiving device 108 is powered.Match circuit 232 can be included with by the impedance and reception of receiving circuit device 210 Antenna 218 is matched.Receiver 208 and transmitter 204 can extraly in discrete communication channel 219 communication (such as bluetooth, Zigbee, honeycomb etc.).Receiver 208 and transmitter 204 can be via the characteristics using wireless field 205 with interior transmission signal So as to alternately communicate.

As described in more fully below, receiver 208 can initially have the selective associated load that can be disabled (for example Battery 236), receiver 208 can be configured to determine the work(launched by transmitter 204 and received by receiver 208 Whether the amount of rate is applied to is charged to battery 236.Further, receiver 208 can be configured as once it is determined that power Amount is that suitable then enable loads (such as battery 236).In certain embodiments, receiver 208 can be configured as directly Battery 236 is not charged using from the power that wireless power transfer place is received.For example, communicator such as near-field communication (NFC) or rfid device (RFID) can be arranged to from wireless power transfer receiving power, and by with nothing Linear heat generation rate transmits field interactions and communicates and/or utilize received power to communicate with transmitter 204 or other devices.

Fig. 3 is the transmitting circuit of Fig. 2 according to an exemplary embodiment of the present invention including transmitting or reception antenna 352 206 or receiving circuit device 210 a part schematic diagram.As shown in Figure 3, for including the example of those as described below Transmitting or receiving circuit device 350 in property embodiment can include antenna 352.Antenna 352 may also be referred to as or be configured to make For " magnetic " antenna or induction coil." " be usually directed to wirelessly can export or receive energy for coupled to another to antenna to term The part of one " antenna ".Antenna relate to be configured to wirelessly to export or receiving power type coil.As herein Used, antenna 352 is to be arranged to wirelessly export and/or receiving power type " power delivery components ".Antenna 352 can be arranged to include air core or physics core, such as ferrite core (not shown).

Transmitting or receiving circuit device 350 can be configured as the resonance for resonant inducing power transmission as described above Circuit/structure.The resonant frequency of transmitting or receiving circuit device 350 is to be based on inductance and electric capacity.Inductance can be simply by Inductance produced by antenna 352, and electric capacity can be added (such as in some cases extra capacitor) with required humorous Resonance structure is produced at vibration frequency.As non-limiting example, capacitor 354 and capacitor 356 can be added to transmitting or connect Receiving circuit arrangement 350, (operating frequency for example exported by any drive circuit, its example is Fig. 2 to produce in resonant frequency Drive circuit 224) place's resonance resonance circuit.Therefore, for larger-diameter antenna, when the diameter or electricity in loop During sense increase, the big I of the electric capacity needed for maintenance resonance reduces.In addition, when antenna diameter increase when, near field it is high-effect Amount transmission region can increase.Other resonance circuits formed using miscellaneous part are also possible.Serial or parallel connection (shunting) Resonance circuit can be used for embodiment described herein.As non-limiting example, capacitor can be arranged in parallel at antenna 352 Two terminals between.For transmitting antenna, its frequency corresponds essentially to the signal 358 of the resonant frequency of antenna 352 Can be to the input of antenna 352.For reception antenna, its frequency corresponds essentially to the resonant frequency of antenna 352 Signal 358 can be the output from antenna 352.

Fig. 4 is the transmitter 404 of the wireless power transmission system according to an exemplary embodiment of the present invention that can be used for Fig. 1 Functional block diagram.Transmitter 404 can include transmitting circuit 406 and transmitting antenna 414.Transmitting antenna 414 can be as Antenna 352 shown in Fig. 3.Transmitting circuit 406 can cause to produce energy around transmitting antenna 414 by providing The oscillator signal of (such as magnetic flux) and to transmitting antenna 414 provide power.Transmitter 404 can be at any suitable frequency Operation.By the mode of example, transmitter 404 can be operated at 6.78MHz ISM bands.

Transmitting circuit 406 can include being used for the impedance (such as 50 ohm) of transmitting circuit 406 and transmitting The blocked impedance match circuit 409 that antenna 414 is matched, and be arranged to be decreased to harmonic emissions to prevent coupled to reception The low pass filter (LPF) 408 of the level of the device self-interference of device 108 (Fig. 1).Other exemplary embodiments can be included not With filter topology, including but not limited to notch filter, its attenuation of specific frequencies and transmit other frequencies and can So that including Adaptive impedance matching, it can be changed based on measurable transmitting specification, such as go to the output work of antenna 414 Rate or the DC electric current drawn by drive circuit 424.Transmitting circuit 406 further comprises being arranged to drive such as The drive circuit 424 (such as power amplifier) of RF signals determined by oscillator 423.Transmitting circuit 406 can be with It is made up of, or it is alternatively possible to is made up of integrated package discrete device or circuit.It is exemplary from transmitting antenna 414 RF power outputs can be in 2.5 watts or higher of magnitude (such as from 10-60 watts or even from 11-10 kilowatts).

Transmitting circuit 406 may further include controller 415, for optionally enabling oscillator 423, be used for The frequency or phase of oscillator 423 are adjusted, and for adjusting power output level, for implementing to be used for by appended by them The receiver that connects and the communication protocol interacted with neighboring devices.Controller 415 can be operably coupled to memory 470.Note, controller 415 can also be referred to herein as processor.The adjustment of interlock circuit in oscillator phase and transmission path It can allow to reduce out-of-band radiation, especially when transitting to another from a frequency.

Transmitting circuit 406 may further include load sense 416, and it is used to detect by transmitting antenna The presence of the active receiver near near field produced by 414 or missing.By the mode of example, load sense 416 is supervised Electric current depending on flowing to drive circuit 424, it can be by the active receiver near as the field produced by transmitting antenna 414 Presence or absence of influence, as described further below.The inspection that change is loaded on drive circuit 424 is monitored by controller 415 Survey to determine whether to enable oscillator 423 for emitted energy to active receiver and communicate with.As it is following more It is completely described, go out the electric current that measures in drive circuit 424 and be determined for whether invalid device is located at transmitter 404 In wireless power transfer region.

Transmitting antenna 414 can be implemented or as antenna strip band using twisted wire (litz wire), be used to selection Thickness, width and the metal types for keeping resistance loss low.In one embodiment, transmitting antenna 414 can generally by with Put for being combined with bigger structure, such as desk, straw mats, light fixture or other less portable configurations.Therefore, transmitting antenna 414 are typically without " turn-taking " in order to actual size.The illustrative embodiments of transmitting antenna 414 can be " electrically small Type " (namely fraction of wavelength) and tuned by using capacitor with limiting resonant frequency with lower available frequency Rate resonance.

Transmitter 404 can collect and follow the trail of on acceptor device that can be associated with transmitter 404 whereabouts and The information of state.Therefore, transmitting circuit 406 can include being connected to depositing for controller 415 (being also referred to herein as processor) In detector 480, closing detector 460 or its combination.Controller 415 can be in response to from Existing detector 480 and envelope The presence signal of detector 460 is closed, and adjusts the amount of the power conveyed by drive circuit 424.Transmitter 404 can pass through Many power supply receiving powers (such as, AC-DC converter (not shown)) are present in the AC power in building with conversion, Dc-dc (not shown) is so that D/C power is changed to the voltage suitable for transmitter 404, or directly from D/C power (not shown).

As non-limiting example, Existing detector 480 can be for sense by it is to be charged, be inserted into transmitter The motion detector being initially present of device in 404 overlay area.After a test, transmitter 404 can be opened, and The RF power received by device can be used for triggering the switch on Rx devices in a predetermined manner, and it results then in transmitter The change of 404 driving point impedance.Further, Existing detector 480 can be used to ensure that to be charged and transmitter The device of 404 communications is one be placed into the overlay area of transmitter 404.

As another non-limiting example, Existing detector 480 can be for example by infrared detection, motion detection or its His suitable mechanism and the detector of the mankind can be detected.In some exemplary embodiments, there may be and limit transmitting day The rule of the amount for the power that line 414 can be launched at specific frequency.In some cases, these rules mean to protect people Class is from electromagnetic radiation.However, it is possible to there is such environment, wherein transmitting antenna 414 be placed on not as occupied by the mankind, Or in the rare region as occupied by the mankind, such as garage, factory's substrate, shop etc..If these environment do not have The mankind, can allow to increase to the power output of transmitting antenna 414 on normal power constraint rule.In other words, controller 415 can exist in response to the mankind and adjust the power output of transmitting antenna 414 to defined level or lower, and work as people Class is adjusted the power output of transmitting antenna 414 in prescribed level when outside the predetermined distance of the field from transmitting antenna 414 On level.

As non-limiting example, closing detector 460 (can also be referred to herein as enclosed compartment (compartment) inspection Survey device or closing space detector) can be such as sense switch etc device, for determining housing when in closure Or opening.When transmitter is in the housing in closed state, the power level of transmitter can be increased.

In the exemplary embodiment, it can make with the following method, not keep uncertain by this method transmitter 404. In this case, transmitter 404 can be programmed to turn off after time quantum determined by user.This feature prevents transmitter 404, longtime running after particularly preventing wireless device of the drive circuit 424 around it fully charged.The event can be with It is due to that fault can not detect that caused by the signal transmitted by transponder or reception antenna 218 signal indicating device is complete Full charging., only can be in its periphery in order to prevent that transmitter 404 is automatically turned off if another device is placed in its periphery Go out after the setting cycle for detecting and lacking and moving and activate transmitter 404 and be automatically turned off feature.User may be able to determine that not Only time interval, and varying depending on.As non-limiting example, time interval can be than initially putting completely in device Time interval under the hypothesis of electricity needed for fully charged particular type wireless device is longer.

Fig. 5 is the receiver 508 of the wireless power transmission system according to an exemplary embodiment of the present invention that can be used for Fig. 1 Functional block diagram.Receiver 508 includes receiving circuit device 510, and it can include reception antenna 518.Receiver 508 is further Coupled to device 550 for providing it received power.It should be noted that receiver 508 is shown as outside device 550 But can be integrated in device 550.Energy can wirelessly propagate to reception antenna 518, and then pass through receiving circuit The remainder of device 510 is coupled to device 550.By the mode of example, rechargeable device can include such as mobile phone, (for example bluetooth is filled for portable music player, laptop computer, tablet PC, computer peripheral devices, communicator Put), digital camera, the device of audiphone (and other medical treatment devices) etc..

Can tune reception antenna 518 with the identical frequency of transmitting antenna 414 (Fig. 4) or in defined frequency Rate scope interior resonance.Reception antenna 518 can be similar with transmitting antenna 414 with size, or can be based on associated devices 550 Size and be differently sized.By the mode of example, device 550 can be portable electron device, and it, which has, is less than hair The diameter of reflector antenna 414 or the diameter of length or length dimension.In this example, reception antenna 518 can be implemented as many Turn coil is in order to reducing the capacitance of tuning capacitor (not shown) and increase the impedance of reception antenna.By the side of example Formula, reception antenna 518 can be placed on the substantially circumference of device 550 and be connect in order to maximize antenna diameter and reduce Receive loop (namely winding) number and interwinding capacity of antenna 518.

Receiving circuit device 510 can be provided to the impedance matching of reception antenna 518.Receiving circuit device 510 includes using In circuit for power conversion device 506 of the RF energy conversions that will be received for the charge power as used in device 550.Power turns Circuit arrangement 506 is changed including RF to DC converters 520, and also includes DC to DC converters 522.RF to DC converters 520 will The RF energy signals rectification received at reception antenna 518 is with by V_rectThe non-alternating work(of represented output voltage Rate.DC to DC converters 522 (or other power governors) by rectified RF energy signal be converted to it is compatible with device 550, With by V_outAnd I_outRepresented output voltage and the energy potential (such as voltage) of output current.Various RF to DC are devised to turn Parallel operation, including partially and fully rectifier, adjuster, electric bridge, frequency multiplier, and linear and dc-dc converter.

Receiving circuit device 510 may further include for reception antenna 518 to be connected into circuit for power conversion device 506 or it is alternatively used for disconnecting the switch circuit devices 512 of circuit for power conversion device 506 (for example receiver is matched And on-off circuit).The charging that reception antenna 518 not only have ceased device 550 is disconnected from circuit for power conversion device 506, And (Fig. 2) is charged to " load " of such as generator 404 " finding ".

As described above, transmitter 404 includes load sense 416, it, which can be detected, is being provided to transmitter driver Fluctuation in the bias current of circuit 424.Therefore, transmitter 404, which has, is used to determine when receiver is present in transmitter Mechanism near field.

When multiple receivers 508 are present in the near field of transmitter, time multiplexing may desire to one or more The loading and unloading of receiver, to cause other receivers to be more efficiently coupled to transmitter 404.Receiver can also be sheltered 508, other neighbouring receivers are coupled in order to eliminate, or reduce the load on transmitter nearby.Being somebody's turn to do for receiver " be unloaded Carry " also it is known as herein " sheltering ".In addition, controlled by receiver 508 and by transmitter 404 detected unloading and The switching between loading can provide the communication mechanism from receiver 508 to transmitter 404, as described in more fully below.Volume Other places, agreement can be associated with switch switching so that message is sent to transmitter 404 from receiver 508.By the side of example Formula, switching speed can be in the magnitude of 100 μ seconds.

In the exemplary embodiment, the communication between transmitter 404 and receiver 508 is related to device sensing and charging control Making mechanism, rather than traditional two-way communication (namely using the interior transmission signal of band of coupled field).In other words, transmitter 404 can With the ON/OFF keying using institute's transmission signal to adjust whether the energy near field can be applied.Receiver can by energy this A little change is construed to the message from transmitter 404.From receiver side, receiver 508 can use the tune of reception antenna 518 Harmonious detuning with adjust from field receive how much power.In some cases, tuning and detuning can be via switch circuit devices 512 And complete.Transmitter 404 carrys out the power difference of self-fields and is construed to come from by these changes to receive used in can detecting The message of device 508.Note, it is possible to use the modulation of transmission power and the other forms for loading behavior.

Receiving circuit device 510 may further include signal transmission detector and beacon circuit 514, can be with for recognizing Transmitted corresponding to from launcher signal to the energy hunting of the information of receiver.In addition, signal transmission and beacon circuit 514 also may be used For detecting the transmission of reduced RF signal energies (namely beacon signal) and being used for the RF signal energy rectifications of reduction For rated power for waking up not powering in receiving circuit device 510 or power drain circuit in order to configuring receiving circuit Device 510 is used for wireless charging.

Receiving circuit device 510 further comprises processor 516 to coordinate entering for receiver 508 described herein Journey, includes the control of switch circuit devices described herein 512.Once there occurs other events, including detect to device 550 The wired charging source in outside (such as wall type/USB power source) of charge power is provided, then sheltering for receiver 508 can occur.Processing Device 516 can also monitor beacon circuit 514 to determine beacon state and extract from hair in addition to control the sheltering of receiver Message transmitted by emitter 404.Processor 516 can also adjust DC to be used to improve performance to DC converters 522.

Fig. 6 can be used for the schematic diagram of a part for the radiating circuit 600 in Fig. 4 transmitting circuit 406.Transmitting Circuit 600 can include the drive circuit 624 as described in figure 4 above.As described above, drive circuit 624 can be switch Amplifier, it can be arranged to receive square wave and export sine wave, to provide to radiating circuit 650.In some situations Middle drive circuit 624 can be referred to as amplifier circuit.Drive circuit 624 is shown as E class A amplifier As (such as including transistor 604th, inductor 606,608 and capacitor 610), however, it is possible to which embodiments in accordance with the present invention use any suitable driving Device circuit 624.Drive circuit 624 can be driven with origin from the input signal 602 of oscillator 423 as shown in Figure 4. Driving voltage V can be provided for drive circuit 624_D, it, which is arranged to control, to be conveyed most by radiating circuit 650 It is high-power.In order to eliminate or reduce harmonic wave, radiating circuit 600 can include filter circuit 626.Filter circuit 626 can be with It is three poles (capacitor 634, inductor 632 and capacitor 636) low-pass filter circuit 626.

The signal exported by filter circuit 626 can be provided to the radiating circuit 650 including antenna 614.Transmitting electricity Road 650 can include with can the frequency resonance of the filtered signal provided by drive circuit 624 electric capacity 620 With the series resonant circuit of inductance (such as can be due to the inductance or electric capacity or extra capacitor part of antenna).Transmitting The load of circuit 650 can be represented by variable resistance 622.Load can be positioned for from the receiving power of radiating circuit 650 Wireless power receiver 508 function.

When multiple transmitters are in the range of the out-of-band communication of receiver, it is important that set up with transmitter, optimal suitable For transmitting wireless power to the communication of receiver.Out-of-band communication between transmitter and receiver can be performed from wireless On the discrete communication channel of power transmission, as described below.Fig. 7 A are to be shown in which that receiver 208 is located at multiple transmitters 204th, the functional block diagram of the situation near 204a, 204b.As indicated, receiver 208 position in order to from transmitter 204 via field 205 receive wireless power.However, receiver 208 can set up the out-of-band communication channel with transmitter 204,204a and 204b 219.Therefore, if receiver 208 establishes the channel 219 with transmitter 204a or 204b, on power transmission it is any after Continuous communication will be unrelated.The situation can be referred to herein as wrong connection or interconnection.

Fig. 7 B are including two power transmitter units (PTU#1 and PTU#2) and four power receiver unit (PRU# 1st, PRU#2, PRU#3, PRU#4) system in interconnection another example block diagram.For example, medium range communications systems are (such as blue Tooth low energy (BLE)) there can be 10-50 meters of scope, mistake can be connected to by potentially resulting in wherein power receiver unit The situation of power transmitter unit by mistake.As shown in fig.7b, PRU#1 has been properly connected to PTU#1, and PRU#4 is Through being properly connected to PTU#2.However, PRU#2 has mistakenly connected (or interconnection) to the non-PTU#2 positioned jointly, And PRU#3 has mistakenly connected (or interconnection) to the non-PTU#1 positioned jointly.As shown in fig.7b, PRU#2 can be with With being connected to PTU#2 communication connection, and there is the wireless power connection for being connected to PTU#1 simultaneously, and PRU#3 can have and connect There is the wireless power connection for being connected to PTU#2 simultaneously to PTU#1 communication connection.

Wireless charging system is expected operation in various exemplary environments, and some have multiple power emitting units and multiple Power receiving unit, wherein the problem of interconnection being caused.For example, " independent " environment can include single power emission list First and single power receiving unit, therefore interconnection can not be caused.As another example, " house " environment can include phase It is mutually (such as 10 meters) spaced apart and mutual while multiple (such as two) power emitting units of operation.As another example, " cafe " environment can include multiple (such as 10) power emitting units of (such as 2 meters) of being spaced from each other.It therefore, it can In the presence of from neighbouring most of power receiver units " " or detectable multiple power emitting units, and can be with office What given time activates multiple (such as 5) of these power emitting units.As another example, " stadium " environment can be wrapped Include mutually (such as every square metre) multiple (such as more than the 1000) power emitting units for being spaced apart (such as one meter).Therefore, Can exist in distance range (such as 10 meters) from power receiver unit " " or detectable many (such as 300) Power emitting unit.

For example by the power receiving unit (False Rejects) mistakenly refusing to position jointly or by mistakenly allowing to hand over The power receiving unit of connection is pitched to keep connecting (mistake receiving), trial prevents incorrect link or interconnection from can fail. For False Rejects, the rechargeable device on correct wireless charger is mistakenly have rejected, and can be by excessive Z Separate or as caused by systematic jitters.The potential result of these False Rejects includes but is not limited to, and long-term refusal (for example divides Clock) until receiving device, and do not see the correspondence of institute's receiving power by transmitter launches too many power and increase again Apparent measurement caused by system jump out (system trip).For mistake receives, by wireless charger oneself mistake Ground receives the rechargeable device on another wireless charger.The failure can by matched well intersection wireless charger or Person is caused (for example at the same time power recovers to multiple wireless chargers) by synchronization timing.

Out-of-band communication (such as advertisement) can be by using any wireless communication protocol of the scope with embodiment Implement (such as privately owned communication protocol, by the communication protocol of the foundation such as the similar IEEE of normal structure, IrDA, Wireless USB, Z-Wave, ZigBee, bluetooth low energy (BLE), and/or other).There are multiple power emitting units can connect to intersecting within the range The problem of connecing contributes.

Fig. 7 C are the block diagrams for the wireless power system 700 for being capable of out-of-band communication, can include Fig. 4 transmitting circuit 406 and Fig. 5's receives circuit 510.Wireless power system 700 can include (such as power transmitter list of wireless charger 702 Member) and rechargeable device 704 (such as power receiver unit).

Wireless charger 702 can include wireless power antenna 714, and coupled to wireless power antenna 714 and by It is configured at least one charged area (such as one, two, three or more charged area) produce wireless charging electric field The wireless power transmitter 710 in (such as magnetic field).Wireless charging electric field can include multiple power signals.Wireless charger 702 can To further comprise communication antenna 724, and coupled to communication antenna 724 and be arranged to via communication antenna 724 with The transceiver 720 (such as out-of-band communication transceiver) of rechargeable device communication.Wireless charger 702 may further include control Device 730, it is arranged to promote to avoid rechargeable device 704 and wireless charger 702 and at least one other wireless charging The interconnection (such as to prevent interconnection, reducing the probability of interconnection, terminate interconnection) of electrical equipment.Connect in the intersection In connecing, rechargeable device 704 will receive work(from wireless charger 702 or at least one other wireless charger (not shown) Rate, and rechargeable device 704 and another wireless charger 702 or at least one other wireless charger (not shown) simultaneously Communication.

In one embodiment, transmitting antenna 714 can be similar to Fig. 4 transmitting antenna 414, and wireless charger 702 wireless power transmitter 710 can be similar to and/or including the identical function of transmitting circuit 406 with Fig. 4. In one embodiment, wireless power transmitter 710 can be arranged to wirelessly transmission power, with by being filled at least one Wireless charging electric field is produced in electric region and charges that (wireless power for for example going to rechargeable device 704 connects to rechargeable device 704 Receive device 715).

Rechargeable device 704 can include being arranged to receive work(from wireless charger (such as wireless charger 702) The wireless power antenna 718 of rate and the wireless power receiver 715 coupled to wireless power antenna 718.Rechargeable device 704 May further include communication antenna 728 and coupled to communication antenna 728 and be arranged to via communication antenna 728 with The transceiver 725 (such as out-of-band communication transceiver) of wireless charger (such as wireless charger 702) communication.Rechargeable device 704 may further include controller 735, be arranged to promote to avoid rechargeable device 704 and wireless charger 702 and The interconnection of at least one other wireless charger (such as to prevent interconnection, reduces the probability of interconnection, terminated Interconnection).For example, as described in more detail below, can be arranged to Configuration Control Unit 735 for generation by wireless charging The load pulse that device (such as wireless charger 702) is received.

In one embodiment, rechargeable device 704 can be similar to Fig. 5 rechargeable device 550, and wireless power Receiver 715 can be similar to or including receiving the identical function of circuit 510 with Fig. 5.Similarly, wireless power receiver 715 are coupled to reception antenna 718.Reception antenna 718 can be similar to Fig. 5 reception antenna 518.

As shown in fig. 7c, out-of-band communication transceiver 720 is coupled to antenna 724 and out-of-band communication transceiver 725 It is coupled to antenna 728.In one embodiment, out-of-band communication transceiver 720 and 725 can be used via antenna 724 and 728 In setting up connection between wireless charging 702 and rechargeable device 704, so that rechargeable device 704 can be from wireless charger 702 wirelessly receiving power in order to its battery or similar device charging.Out-of-band communication be (such as the arrangement of device to be charged Initial notification, advertisement, or can be by using wireless communication protocol (for example on other communications of the management of wireless power session Privately owned communication protocol, the communication protocol set up by the similar IEEE of normal structure, etc.) and implement.It is, for example, possible to use IrDA, nothing Line USB, Z-Wave, ZigBee, bluetooth low energy (BLE) and/or similar.

In order to more fully understand solution technology disclosed herein, what is helped is to understand to be used to set up out-of-band communication channel Illustrative methods.Fig. 8 is in wireless charger and rechargeable device (such as wireless charging 702 (such as power transmitter unit)) Communicate with setting up between wireless charger and rechargeable device between rechargeable device 704 (such as power receiver unit) The sequential and signal flow graph of the example of connection.Wireless charger 702 can with transmission power pulse 802 (such as beacon signal), Wherein power pulse 802 can be used to provide power to rechargeable device (such as rechargeable device 704), with to rechargeable device Charging (or provide at enough power levels rechargeable device 704 supplies its out-of-band communication transceiver 725 Electricity is for initial message is sent to wireless charger 702).Wireless charger 702 can with transmission power pulse 802 so as to In detection rechargeable device 704.As shown in Figure 8, transmission power pulse 802, can but no in the range of power pulse 802 Charging device 704.Wireless charger 702 can wait for a period of time before another power pulse 804 is launched.For example, wireless Charger 702 can be waited 1 second between the pulses.Once transmitting power pulse 802 and/or 804, wireless charger 702 can Process is set up to start generic connectivity.As shown in Figure 8, power pulse 804 is launched and in the scope of rechargeable device 704 It is interior.

Once wireless charger 702 detects the load on power pulse 804, then wireless charging 702 starts scanning and come from The broadcast of device (such as rechargeable device 704).In this way, once wireless charger 702 can detect power by it Loaded in pulse, only scanning is broadcasted and preserves power.In one embodiment, power pulse 804 causes rechargeable device 704 Produce broadcast (for example the processor of rechargeable device 704 can produce broadcast).As an example, broadcast 806 can be in bluetooth The message launched on low energy channel.Rechargeable device 704 can be used as the recipient deliberately designed using wireless charger 702 And launch broadcast 806.If broadcast 806 does not reach wireless charger 702 (as shown in Figure 8), rechargeable device 704 can To be generated and transmitted by another broadcast 808.For example, rechargeable device 704 can wait 20ms before another broadcast 808 is sent. If setting up connection not in sometime frame such as 10 seconds, rechargeable device 704 is available, which to be exited, connection mode and to stop Any charging that can only have begun to.In this way, once rechargeable device 704 can by only its from wireless charger 702 have received power pulse 802 and/or 804 and be generated and transmitted by broadcast 806 and/or 808 to preserve power.

Note there are many situations of the connection that can wherein make a mistake (such as interconnection).For example in chargeable dress Putting another device or the object near wireless charger 702 on 704 sides can make it that the detection of wireless charger 702 is negative Carry and start scanning broadcast.As another example, some chargers can independently of power pulse 802 and 804 timing and Continuously scanning broadcast.As another example, some rechargeable devices can be independently of power pulse 802 and 804 continuously Broadcast.As another example, wireless charger can be before the initialization that the charger from power pulse first account for communication Broadcast is responded.Therefore, in these and other situations, wireless charger 702 can be inadvertently with charging positioned at effective Rechargeable device outside region sets up communication, so as to cause incorrect link or interconnection.

Once wireless charger 702 have received broadcast 808, then wireless charger can send to rechargeable device 704 and connect Connect request 812.If rechargeable device 704 receives connection request 812, wireless charger 702 and rechargeable device 704 it Between set up connection 814.

Note, in fig. 8 during shown connection procedure, wireless charger 702 can continue transmission power 810, such as Via power pulse 802 and/or 804, in order to be charged to rechargeable device 704.In certain aspects, rechargeable device 704 Can in charger powering mode, and power 810 will allow rechargeable device 704 keep activation in order to set up with wirelessly The connection of charger 702.Once wireless charger 702 determines that connection can not be set up, then rechargeable device 704 is now arranged in confession Power mode, and/or rechargeable device 704 is additionally and the power that need not launch from wireless charger 702, then wireless charger 702 can stop transmission power 810.

If pointing out loss connection any, rechargeable device 704 can be attempted to reconnect with wireless charger 702. Alternatively, rechargeable device 704 can be waited, until its from wireless charger 702 receive another power pulse 802 and/or 804。

If drying method disclosed herein can be used for auxiliary band between wireless charger 702 and rechargeable device 704 The correct connection of external signal transmission, and/or whether determine between wireless charger 702 and rechargeable device 704 not just Really establish out-of-band communication channel (such as incorrect link or interconnection).These methods are referred to herein as parsing (resolution) method.Some in these analytic methods not must assure that between optimal transmitter and receiver Establish out-of-band communication channel.Alternatively, certain methods are tended to support or determine to set up the suitable of communication channel inferentially The property worked as.Therefore, one or more of these analytic methods can be used alone or in combination in wireless power transmission system with Promote to avoid interconnection (such as to prevent interconnection, reducing the probability of interconnection, terminate interconnection).Further Ground, the output of these analytic methods can be compared with the threshold value for ad hoc approach and/or with disclosed other method group herein Close.The output of these methods can weight and assess whether to have had mistake in probability or fuzzy logic Type model Connect and whether should attempt to reconnect out-of-band communication.

Can by controller (such as Fig. 4 controller 415, Fig. 5 processor 516, Fig. 7 controller 730,735) hold Row analytic method.In one embodiment, analytic method can by emitter side controller (such as wireless charger controller 730) assessed using the measured value for the receiver-side launched on out-of-band communication channel.In another embodiment, parsing side Method can be assessed in emitter side or receiver-side, wherein the output of gained is launched to transmitter via out-of-band communication channel (or receiver).Further, once identify incorrect link (such as interconnection) but abandon out-of-band communication channel it Before, local controller (such as controller 730 or 735) can by incorrect link notify remote controllers (for example controller 730 or 735 another).In certain embodiments, controller (such as controller 730 or 735) can provide extra time to allow Connection is formed, to solve interconnection, such as in the arrangement of rechargeable device 704 to solving to be added between any interconnection Total time.Especially, the crowded environment with many wireless chargers and many rechargeable devices can take a significant amount of time To solve any interconnection.

" loss power " process can use power measurement values (such as AC or DC) with going out to be reported in rechargeable device 704 Power ratio compared with calculate " loss " power amount, it is intended to close down to wireless charger 702 when too many power no count Power supply, the metal object that thereby aiding in prevents from being placed on wireless charger generates heat during operation.In order to accurately measure The power of loss, it is desirable to the number of the device of accurate metering receiving power, but the exact number can when occurring interconnection It is able to not can obtain.Therefore, interconnection can cause surprisingly to close down, if employing loss power algorithm, thus reduce use Experience at family.By " disabling (leave off) " any rechargeable device under a cloud for cross-connecting to multiple power chargers, subtract The quantity of power that the probability and rechargeable device 704 that the small power supply caused by losing power is jumped out are drawn.However, because Rechargeable device 704 will not recharged in these cases, therefore Consumer's Experience can be damaged.Therefore, in certain embodiments, Analytic technique described herein can improve Consumer's Experience.

Saturation testing

In certain embodiments, wireless power system using data link to control to be launched to can by wireless charger 702 The power of charging device 704.For example, the out-of-band communication channel as described in herein relative to Fig. 8 can be used for initiating data link (for example connecting 814).Data link can be used by rechargeable device 704, (for example be felt with the voltage when rechargeable device 704 The output voltage of the receiving circuit device 510 measured) indicate that institute's transimission power amount transmits too low predetermined water less than indicated horsepower Usually, more power from wireless charger 702 are asked.In addition, data link can be used by rechargeable device 704, with When voltage (such as the output voltage of the receiving circuit device 510 sensed) is transmitted in indicated horsepower on too high predeterminated level When ask the less power from wireless charger 702.In the normal operation period, data link this using can be used for optimization The power transmission of one or more rechargeable devices 704 is gone to from wireless charger 702, therefore all rechargeable devices 704 connect The acceptable amount of power transmission is received.

However, can be meaningless or famine using the behavior of the wireless power system of data link during interconnection Wrong.If for example, rechargeable device 704 by interconnection (such as from receiving power of wireless charger 702 but with it is another One wireless charger 702 communicates), then when it asks transmission power to change, rechargeable device 704 will not detect transmitting The change of power, because request is not sent to the wireless charger 702 that power is provided to rechargeable device 704 by communication, and It is to send to another wireless charger 702.The interconnection can cause the power water for the wireless charger 702 that have received request Flat saturation.Thus, according to the one side of one embodiment, if controller (such as control of wireless charger 702 Device 730, the controller 735 of rechargeable device 704) determine the request true change not with power that changes for power Match somebody with somebody, then controller can determine that interconnection can be potentially there are.In addition, for example, from the rechargeable device 704 of interconnection Receiving can the final saturation under its peak power, and rechargeable device 704 to the wireless charger 702 of the requests of more power What just detection was seldom applies power (for example causing the rechargeable device 704 for asking more power).Alternatively, wireless charger 702 requests received from the rechargeable device 704 of interconnection for less power are terminated at the saturation under its minimum power, And rechargeable device 704 detects applicable high power amount (such as causing the rechargeable device 704 for asking less power).

Fig. 9 is the rechargeable device for promoting to avoid communicating with wireless charger 702 according to said some embodiments The flow chart of exemplary first analytic method 900 of 704 interconnection.In operation box 910, wireless charger 702 is detected Institute's transmission power level., can be by the institute's transmission power level detected with indicating at least one saturation in operation box 920 At least one predeterminated level of condition compares.For example, the institute's transmission power level detected can be with indicating peak power saturation First predeterminated level of condition compares.Peak power saturation conditions can correspond to wherein institute's transmission power in the first power level Place or on condition.First power level can correspond to maximum can tolerable injury level.Maximum can tolerable injury level can be based on Some higher limits in one or more features or agreement for operating wireless charger 702 are (such as based on according to chargeable The different types of limit value of modulability of device, or for protecting some elements of wireless charger 702).In some cases The institute's transmission power level detected can be with indicating that the second predeterminated level of minimum power saturation conditions is compared.Minimum power is satisfied With condition can correspond to wherein institute's transmission power at the second power level or under condition.Second power level can be right Ying Yu most I tolerable injury levels.Most I tolerable injury level can be based on one or more features or for operating wireless charger Some lower limits of 702 agreement.In operation box 930, wireless charger 702 can be based at least partially on the presence or absence of extremely A few saturation conditions and initiate and (for example promote) the disconnected of between wireless charger 702 and rechargeable device 704 communication link Connection is opened, therefore finishes interconnection.If for example, the institute's transmission power level detected at the first predeterminated level or it On, then wireless charger 702 can initiate and (for example force) wireless charger 702 and disconnected from rechargeable device 704, or If the institute's transmission power level detected at the second predeterminated level or under can initiate and (for example force) to disconnect. In some embodiments, it can detect and (for example ask changing for institute's transmission power for power adjusting from rechargeable device 704 Become) request.For example, asking the change for transmission power to can correspond at least one in following item：When at least one Saturation conditions indicates the request for increased power level when maximum can allow transmitter power level；Or when at least one Saturation conditions indicate most I application transmitter power level when for reduction power level request.For power adjusting Request can be compared with least one predeterminated level, and can be compared based on this and be initiated wireless charger 702 from chargeable The disconnecting of device 704 (whether will be for example arranged on peak power saturation conditions based on the power adjusting asked or Less than institute's transmission power level that minimum power keeps condition).

In certain embodiments, by (such as by the controller of the wireless charger 702) perform detection of wireless charger 702 institute The power level of transmitting, compare institute's transmission power level for detecting and initiate to disconnect.In some other embodiments In, by (such as by the controller 735 of the rechargeable device 704) perform detection of rechargeable device 704 institute transmission power level, compare The institute's transmission power level and initiation detected is disconnected.In other some other embodiments, by wireless charger 702 (such as by the controller 730 of wireless charger 702) perform detection institute transmission power levels, compare being launched of detecting Power level and initiation disconnect at least one, and by rechargeable device 704 (such as by rechargeable device 704 Controller) perform detection institute transmission power level, compare institute's transmission power level for detecting and initiate in disconnecting extremely Lack another.

In certain embodiments, in order to avoid being disconnected during unintentionally power transience changes, wireless charger 702 Do not initiate to disconnect, until the lasting predetermined time quantum (such as one second, two seconds or more) of saturation conditions.For example, can be with Configure (such as controller of wireless charger 702 of wireless power system 700；The controller of rechargeable device 704) be to detect It is no to there is at least one saturation conditions for predetermined time amount, and continue pre- timing detecting at least one saturation conditions Initiate to disconnect after the area of a room.

In certain embodiments, (the controller 730 of such as wireless charger 702 of wireless power system 700；Chargeable dress Put 704 controller 735) non-crossing that is configured as in interconnection condition and wherein exists at least one saturation conditions connects Distinguished between condition, and be arranged to not initiate then to disconnect if there is non-crossing condition of contact.For example, wireless work( (the controller 730 of such as wireless charger 702 of rate system 700；The controller 735 of rechargeable device 704) it can be configured as Detection wherein wireless charger 702 and rechargeable device 704 are by limited distance (such as by being folded in wireless charger 702 and can Paper washer between charging device 704) condition separated and/or the power wherein asked by rechargeable device 704 exceed it is wireless The condition for the peak power that charger 702 can be provided.Caused by the separation or excessive power request, wireless charger 702 Can be in saturation under peak power, and rechargeable device 704 is in relatively low power, even if there be no interconnection.Can To detect the situation, because increasing work(in the wireless charger 702 caused by the powerful request of increasing from rechargeable device 704 During rate, the voltage of rechargeable device 704 will still rise, although the voltage of rechargeable device 704 may not realize enough, institute Level need or preferable.

In certain embodiments, wireless charger 702 can further make the decision on herein below：Whether pass through Cause the change of the intentional and predetermined amplitude of the power launched from wireless charger 702 during predetermined amount of time and intersect company Connect rechargeable device 704.For predetermined amount of time intentional and predetermined amplitude change can by wireless charger 702 or by Rechargeable device 704 is (such as by the controller 730 of wireless charger 702；By the controller 735 of rechargeable device 704) request, And it can be performed by wireless charger 702 (such as by the controller of wireless charger 702).If for example, rechargeable device 704 due to operation box 920 above saturation testing (or due to described herein other test) and interconnection under a cloud, then without Line charger 702 can intentionally perform the instantaneous change of institute's transmission power, and (such as wireless charging of wireless power system 700 The controller 730 of electrical equipment 702；The controller 735 of rechargeable device 704) can detecting the institute's transmission power detected Change with the Amplitude Ratio deliberately changed compared with to determine whether rechargeable device 704 detects the intentional change of institute's transmission power. If rechargeable device 704 detect in institute's transmission power this intentional change, it is however very well possible for be rechargeable device 704 with Wireless charger 702 communicates (for example rechargeable device 704 is positioned on wireless charger 702) and rechargeable device 704 is simultaneously Interconnection is not suffered from.Similarly, if rechargeable device 704 and being not detected by the intentional change of institute's transmission power (for example simultaneously Be not detected by change or detect and differ the change of at least scheduled volume with change), it is however very well possible for be rechargeable device 704 simultaneously Do not communicate (such as rechargeable device 704 and be not located on wireless charger 702) and rechargeable device with wireless charger 702 704 can undergo interconnection.

In certain embodiments, (the controller 730 of such as wireless charger 702 of wireless power system 700；Chargeable dress Put 704 controller 735) predetermined amplitude and the time for (for example customizing) that institute's transmission power changes on how selecting can be made Section is to avoid adversely affecting from the transimission power of wireless charger 702 to being appropriately coupled to the chargeable of wireless charger 702 The decision of device 704.For example, if wireless charger 702 has three rechargeable devices 704 in its charged area, and Two in these rechargeable devices 704 are appropriately coupled to wireless charging 702 and are electrically charged, but the 3rd rechargeable device 704 interconnections under a cloud, then wireless charger 702 can selectively change launched power (for example increase is launched Power reduces institute's transmission power), so as to not negatively affect two rechargeable devices 704 correctly operated.With In upper example, if the report of two rechargeable devices 704 they receive the power of voltage for causing just to be enough to charge, nothing Line charger 702 can instantaneously increase launched power (such as predetermined time period).If two chargeable dresses Put 704 reports they near their maximum voltage limit value, then wireless charger 702 can instantaneously reduce launched work( Rate (such as predetermined time period).If two rechargeable devices 704 report them respectively in the minimum and maximum of them Near voltage limits, wireless charger 702 can select not making the instantaneous change of transmission power, in order to which avoidance breakout is to two The power supply of individual connected rechargeable device 704.In some this embodiments, wireless charger 702 may rely on as in this institute Other tests stated.

Randomization transmitter is opened

In some cases, during the initial unlatching of wireless power system 700, multiple wireless chargers 702 can be Mutually mutually in the same time or close to mutually open in the same time, plurality of rechargeable device 704 close to wireless charger 702 (for example Each rechargeable device 704 is located on a wireless charger 702), it is ready to be electrically charged.For example, being multiple wireless chargers The initial power-up of the branch circuit of 702 offer electric power can cause the situation to occur.If mutually in the same time or close to it is identical when Carve and open all wireless chargers 702, then multiple rechargeable devices 704 will be detected mutually in the same time or close to mutually being applied in the same time Plus power so that cause multiple rechargeable devices 704 potentially all attempt mutually in the same time or close to mutually connect in the same time To corresponding wireless charger 702.During the situation, wireless charger 702 can be difficult to which rechargeable device 704 determined In the charged area of their own.

Figure 10 is the chargeable dress for promoting to avoid communicating with wireless charger 702 according to some embodiments described herein Put the flow chart of the example of the second analytic method 1000 of 704 interconnection.In the operation box 1010 of method 1000, for It is operably coupled to each wireless charging of multiple wireless chargers 702 of common power source circuit (such as common branch circuit) Device 702, provides to wireless charger 702 and (ii) wireless charger 702 via common power source circuit in (i) power and opens (example Power is such as wirelessly transmitted to one or more rechargeable devices 704) between period be arranged to be used for wireless charger 702 random value.The operation box 1010 can be referred to as the opening time of randomization wireless charger 702.Can be by wireless charging The selection random value of controller 730 of device 702, and can be random from predetermined range (such as between zero-sum one second) selection Value.Although being retouched with reference to the exemplary configuration with the multiple wireless chargers 702 for being operably coupled to common power source circuit Stated Figure 10 illustrative methods 1000, but some other embodiments described herein be used to not constraining in this way its He configures.In the operation box 1020 of method 1000, once power is provided to common power source circuit, when its is corresponding random Between after section pass by, open each wireless charger 702 of multiple wireless chargers 702.

By the opening time of randomization wireless charger 702 as described above, rechargeable device 704 will not be attempted Their data link is mutually connected to wireless charger 702 in the same time in the same time or close to phase.For example, in some embodiments In, it is random to open because rechargeable device 704 sends connection request broadcast 808 after receiving power pulse 804 according to Fig. 8 Time will cause when rechargeable device 704 is attempted to connect the change of their data link.Random opening timing increase to Determine the probability that wireless charger 702 will be powered up at the time of for the uniqueness of wireless charger 702, and therefore wireless charger One or more rechargeable devices 704 will attempt connection at the time of uniqueness in 702 charged area.Filled by only detecting at it Those rechargeable devices 704 of connection are attempted in electric region after wireless charger 702 applies power, friendship can be greatly reduced Pitch the incidence of connection.

It can be contrasted using the size of charged area and rechargeable device

Wireless charger 702 can have or limit charged area, wherein can effectively transimission power to one or many Individual rechargeable device 704, and each rechargeable device 704 can have corresponding size.Charged area can have predetermined Charged area, and each rechargeable device 704 is arranged in the charged area of wireless charger 702, is freely received additionally The amount of the charged area of rechargeable device 704 reduces, until charged area no longer can reasonably accommodate extra rechargeable device 704.Therefore, charged area only reasonably can accommodate a limited number of rechargeable device 704 simultaneously.If the first wireless charging The amount of the charged area for freely receiving extra rechargeable device 704 of device 702 is less than the region (example of extra rechargeable device 704 As a limited number of rechargeable device 704 is already attached to the first wireless charger 702), and extra rechargeable device 704 The first wireless charger 702 is attempted to connect to, then the extra rechargeable device 704 can be regarded as that there is it to be physically located separately High probability on one second wireless charger 702, so that its connection for going to the first wireless charger 702 will cause interconnection Condition.

Figure 11 is the rechargeable device for promoting to avoid communicating with wireless charger 702 according to said some embodiments The flow chart of the example of 3rd analytic method 1100 of 704 interconnection.In operation box 1110, wireless charger is determined 702 charged area.For example, the controller 730 of wireless charger 702 can access the charging for defining wireless charger 702 The memory (not shown) in region.In operation box 1120, each chargeable dress for attempting to connect to wireless charger 702 704 are put, the region of rechargeable device 704 (for example can freely receive filling for rechargeable device 704 with the free amount of charged area The amount in electric region) compare.For example, once receiving the request for being connected to wireless charger 702 from rechargeable device 704, then control Device 730 processed can compare the region of rechargeable device 704 and freely receive the amount of the charged area of rechargeable device 704.

In operation box 1130, it can be at least partially in response to compare and receive or refuse in the He of rechargeable device 704 Connection between wireless charger 702.If for example, the region of rechargeable device 704, which is less than or equal to, freely receives chargeable The amount of the charged area of device 704, then controller 730 rechargeable device 704 can be allowed to be connected to wireless charger 702.Again If for example, the region of rechargeable device 704 is more than the amount for the charged area for freely receiving rechargeable device 704, controller 730 can refuse (for example refusal allows) rechargeable device 704 and be connected to wireless charger 702, or complete other operations or Test to determine whether there is interconnection problem.In operation box 1140, in response to receiving in rechargeable device 704 and wirelessly Connection between charger 702 or the termination in response to being connected between rechargeable device 704 and wireless charger 702, can To change the amount for the charged area for freely receiving rechargeable device 704.For example, in response to receiving in rechargeable device 704 and nothing Connection between line charger 702, controller 730 can be by subtracting chargeable dress from the value before freely measured of charged area The region and recalculating for putting 704 freely receives the charged area amount of rechargeable device 704.For another example can in response to terminating in Connection between charging device 704 and wireless charger 702, controller 730 can by from charged area freely measure it The region of preceding value addition rechargeable device 704 and the amount for recalculating the charged area for freely receiving rechargeable device 704.If In the presence of for device whether some level of uncertaintys of interconnection, as detailed herein, the measurement based on other specification, Can be without charged area.

The time window of data cube computation

When power is first applied to wireless charger 702, the chargeable dress of the power from wireless charger 702 is detected Put 704 and can use some time quantums (such as 50ms) with start and enable rechargeable device 704 and wireless charger 702 it Between data cube computation (for example, particularly in the complete depletion of situation of battery of wherein rechargeable device 704).Powered from battery Rechargeable device 704 wait one at the time of can also intentionally detect the power from wireless charger 702 first from it At the time of a little time quantums to rechargeable device 704 enables its data cube computation with wireless charger 702 (such as 50ms).At two kinds In situation, rechargeable device 704 can be configured as in predetermined maximum time period (such as 70ms) and enable it going to wirelessly The data cube computation of charger 702.Therefore, in some cases, there may be time window (such as between 50ms and 70ms), The rechargeable device 704 in the charged area of wireless charger 702 (such as on charging pad) will be in work(during this period Rate applies to wireless charger 702 data cube computation enabled between rechargeable device 704 and wireless charger 702.Nothing Line charger 702 can be connected and by refusing to ask outside the time window by receiving the request data in time window The data cube computation asked and by the use of the time window as receiving time window.In receiving outside time window for wireless charger 702 The rechargeable device 704 of request data connection assume that and detects the power from different radio charger 702, and can be with Refuse the data cube computation to avoid interconnection.

Figure 12 is the chargeable dress for promoting to avoid communicating with wireless charger 702 according to some embodiments described herein Put the flow chart of the example of the 4th analytic method 1200 of 704 interconnection.In operation box 1210, for wireless charger 702 restrictions receive time window.For example, the controller 730 of wireless charger 702 can access and define wireless charger 702 The memory (not shown) for receiving time window.Rechargeable device 704 in the charged area positioned at wireless charger 702 Detect after the power from wireless charger 702, receiving time window can occur.Receiving time window can have Power applies to wireless charger 702 first end point at the first predetermined time amount, and applies in power to wireless The second end points after charger 702 at the second predetermined time amount.For example, the first predetermined time amount can correspond in detection To the power from wireless charger 702 and enable between rechargeable device 704 and wireless charger 702 between data cube computation Minimum expected delay (such as 50ms).In certain embodiments, it is contemplated that delay can as above join from when wireless charger 702 Start according to the time point described in Fig. 8 during transmission power pulse 804.In other embodiments, it is contemplated that delay can from some its His period, such as when wireless charger 702 detects rechargeable device 704 as further described below can be During instruction (such as the change of impedance or other characteristics) in the charged area of wireless charger 702.Second scheduled time Amount can correspond in power of the detection from wireless charger 702 with enabling in rechargeable device 704 and wireless charger 702 Between greatest expected delay (such as 70ms) between data cube computation.In operation box 1220, wireless charger 702 is from chargeable Device 704 receives to enable the request of data cube computation.In operation box 1230, wireless charger 702 determines receiving time window Inside whether ask.For example, once the request from the receiving of rechargeable device 704 is then controlled with being connected to wireless charger 702 Device 730 can compare request time and receive time window.In operation box 1240, whether can receive in response to request Receive in time window or refusal data cube computation.If for example, being asked during time window is received, number can be received According to connection, and if do not asked during time window is received, data cube computation can be refused.

On the time window of the data cube computation detected with device

In certain embodiments, wireless charger 702 can include being used to detect whether rechargeable device 704 is located Sensor or other devices in the charged area of wireless charger 702.For example, wireless charger 702 can include by with Put for the sensor for detecting the change for launching resonator impedance (for example, in certain embodiments can be with the load sense of configuration diagram 4 Slowdown monitoring circuit 416 is to detect similar change).Wireless charger 702, which can detect to have been arranged on rechargeable device 704, to be filled Suspicious instruction in electric region.For example, the resistance shift detected can be less than it is expected from charged area is placed on can Charging device 704 and occur resistance shift.In certain embodiments, in response to suspicious instruction, wireless charger 702 can be with Further delay receives time window backward in time.For example, for it is unsuspicious indicate (such as resistance shift be more than or In predetermined value) for, it can be 50ms-70ms to receive time window, but (is, for example, less than predetermined value for suspicious instruction Resistance shift) for, (such as offset) can be postponed to 950ms-970ms (such as wherein wireless chargings by receiving time window Device 702 receives the time window of the request for setting up the communication from rechargeable device 704).By have detected chargeable dress Before another wireless charger 702 for putting the 704 suspicious instructions arranged in its charged area, it is allowed to have detected rechargeable device The wireless charger 702 of the 704 unsuspicious instructions arranged in its charged area attempts connection, and some this kind of embodiments are advantageously Interconnection is reduced, hence improving the correct wireless charger 702 during relatively early time window is received will be connected to and can fill The probability of electric installation 704.

Figure 13 is to promote to avoid the chargeable dress that is communicated with wireless charger 702 according to said some embodiments Put the flow chart of the example of the 5th analytic method 1300 of 704 interconnection.In operation box 1310, for wireless charger 702 restrictions receive time window.Rechargeable device 704 in the charged area positioned at wireless charger 702, which is detected, to be come from After the power of wireless charger 702, receiving time window can occur.Receiving time window can have in application power extremely First end point after wireless charger 702 at the first predetermined time amount, and apply in power to wireless charger 702 The second end points at second predetermined time amount.For example, the first predetermined time amount can correspond to detecting from wireless charging Minimum expected delay of the power and enable of device 702 between rechargeable device 704 and wireless charger 702 between data cube computation (such as 50ms), and the second predetermined time amount can correspond to detecting power and enable from wireless charger 702 Greatest expected delay (such as 70ms) between data cube computation between rechargeable device 704 and wireless charger 702.In behaviour Make in frame 1320, wireless charger 702 receives request to enable data cube computation from rechargeable device 704.

In operation box 1330, whether wireless charger 702 is detected on rechargeable device 704 in wireless charger 702 Charged area in the instruction resistance shift of resonator impedance (such as launch), and (example is compared into the instruction with predetermined value Such as launch the minimum impedance skew of resonator impedance, it indicates rechargeable device 704 in the charged area of wireless charger 702 It is interior).In operation box 1340, if the instruction detected on rechargeable device 704 whether wireless charger 702 charging It is that indecisive (resistance shift for example detected is less than predetermined minimum impedance and offset, and it is rechargeable device in region 704 instruction in the charged area of wireless charger 702), connect with predetermined time amount (such as 900ms) delay (such as offseting) By time window.In some embodiments it is possible to by wireless charger 702 receive to enable data cube computation request it Before, can detect on rechargeable device 704 whether the instruction in charged area.

In operation box 1350, wireless charger 702 determines receiving whether to ask in time window.In operation box , can be in response to receiving or refusing data cube computation receiving whether to occur asking in time window in 1360.If for example, Receive to ask during time window, then can receive data cube computation, and if do not occur during time window is received Request, then can refuse data cube computation.

The delay of follow-up rechargeable device or refusal

(for example wherein only exist a rechargeable device 704) in certain embodiments, attempt to create data cube computation first It will be maximally effective trial.For example, the rechargeable device 704 in the charged area in wireless charger 702 (such as on pad) To attempt first will enable the trial with the data cube computation of wireless charger 702.In certain embodiments, wireless charger 702 can receive to the data cube computation of the first rechargeable device 704, attempt to enable the data cube computation with wireless charger 702.Nothing Line charger 702 can then receive from other rechargeable devices 704 data cube computation (for example predetermined time delay it Afterwards), or the data cube computation from other rechargeable devices 704 can be refused.For example, for being arranged to while conveying work( For rate to the wireless charger 702 of multiple rechargeable devices 704, wireless charger 702 can predetermined time delay it It is followed by by these follow-up data connection requests.For another example for being arranged to each transimission power to single rechargeable device For 704 wireless charger 702, wireless charger 702 can refuse these follow-up data connection requests.Some this implementations It will be correct rather than the probability of interconnection situation that example, which can improve connection,.

Figure 14 is the chargeable dress for promoting to avoid communicating with wireless charger 702 according to some embodiments described herein Put the flow chart of the example of the 6th analytic method 1400 of 704 interconnection.In operation box 1410, wireless charger 702 The request for enabling data cube computation is received from rechargeable device 704.In operation box 1420, wireless charger 702 is determined, Before receiving request from rechargeable device 704, any request (request for example received whether is had been received by before Whether it is the request first received by wireless charger 702).In operation box 1430, if from rechargeable device 704 receive request before not yet receive request (request for example received received first by wireless charger 702 Request), wireless charger 702 receives data cube computation.If wireless charger 702 is configured as with only transimission power every time to list Individual rechargeable device 704, then wireless charger 702 can refuse follow-up data connection request.

The delay of weaker rechargeable device or refusal

In certain embodiments, the rechargeable device 704 with the most strong data-signal detected by wireless charger 702 By be wireless charger 702 charged area in rechargeable device 704 (such as on pad).Wireless charger 702 can connect By the data cube computation from the rechargeable device 704 with most strong data-signal, and it can postpone to receive or can refuse to come From the data cube computation of the rechargeable device 704 with weaker data-signal.The intensity of data-signal from rechargeable device 704 (such as survey based on the transient data signal intensity from rechargeable device 704 can be measured first in data detection signal Value), or can be measured after predetermined amount of time short after detecting data-signal (such as based on from chargeable dress Put the measured value of 704 average data signal strength).Using average data signal strength can tend to eliminate artificial disturbance or The effect of external disturbance.It will be correct rather than the probability of interconnection situation to receive most strong data-signal to improve connection.

Figure 15 is the rechargeable device for promoting to avoid communicating with wireless charger 702 according to said some embodiments The flow chart of the example of 7th analytic method 1500 of 704 interconnection.In operation box 1510, wireless charger 702 connects One or more requests are received to enable the data cube computation from one or more rechargeable devices 704.In operation box 1520, nothing Which request line charger 702 determines with the most strong data-signal in one or more requests.In operation box 1530, wirelessly Charger 702 receives the data cube computation of the most strong data-signal corresponding to one or more requests.For and without most strong number It is believed that number request, wireless charger 702 can postpone to receive or can refuse data cube computation.

Each operation of approach described above can be performed by any appropriate device for being able to carry out operation, such as various hard Part and/or software part, circuit and/or module.Generally, can be in the corresponding functional device execution figure for being able to carry out operation Shown any operation.

Any various different process and technology can be used to represent information and signal.For example, can be throughout description above Data, instruction, order, information, signal, code bit, symbol and the chip of reference can be by voltage, electric current, electromagnetic wave, magnetic field or magnetic Son, light field or photon or its any combination are represented.

Various illustrative logical chunks, module, circuit and algorithm steps with reference to described in embodiment disclosed herein can To implement as electronic hardware, computer software, or both combination.In order to clearly show hardware and software this is interchangeable Property, the above describes various schematic parts, chunk, module, circuit and step generally according to their function.The work( Whether the design constraint that as hardware or software depends on application-specific and to total system propose can be implemented.The function can To be implemented for each application-specific in the way of change, but the embodiment determines to should not be construed as so that departing from this hair The scope of bright embodiment.

Various schematic chunks, module and circuit with reference to described in embodiment disclosed herein, which can be used, to be designed for Performing the general processor of said function, digital signal processor (DSP), application specific integrated circuit (ASIC), scene can compile Journey gate array (FPGA) or other PLDs, discrete gate or transistor logic, discrete hardware components or its any group Close and be practiced or carried out.General processor can be microprocessor, but in alternative, processor can be any traditional Processor, controller, microcontroller or state machine.Processor can also implement the combination as computing device, such as DSP and micro- The combination of controller, multi-microprocessor, the one or more microprocessors combined with DSP core, or any other is this Configuration.

With reference to the step of the method or algorithm described in this disclosed embodiment and function can be directly embodied in firmly In part, in the software module by computing device, or in both combinations.If implemented in software, function can be with It is stored in tangible non-transient computer-readable media or sends above as one or more instructions or code. Software module may reside within random access storage device (RAM), flash memory, read-only storage (ROM), electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM), register, hard disk, removable disk, CD ROM or known in the art Any other form storage medium.Storage medium is believed coupled to processor with alloing processor to be read from storage medium Cease and be written to information.In alternative, storage medium can be with processor monolithic molding.Plate and dish as used in this Including small-sized dish (CD), laser disc, laser disc, digital universal dish (DVD), floppy disk and blu-ray disc, which disk is generally magnetically replicated Data, and dish is using laser optics ground replicate data.Combination above should also be included in the range of computer-readable medium. Processor and storage medium may reside within ASIC.ASIC may reside within user terminal.In alternative, processor and Storage medium can be resident in the user terminal as discrete parts.

In order to summarize the purpose of the disclosure, some aspects, advantage and character of innovation there is described herein.It should be appreciated that It is that all these advantages need not be realized according to any specific embodiment of the invention.It therefore, it can realize or optimize as in this institute One advantage of teaching or the mode of advantage group and be practiced or carried out the present invention, without realizing as can be instructed at this or Other advantages implied.

The various modifications of above-described embodiment will be easy to it will be evident that and going in this universal principle limited Other embodiment and without departing from the spirit or scope of the present invention.Therefore, the present invention is not intended to be limited to reality shown here Example is applied, but should comply with the most wide scope consistent with character of innovation with principle disclosed herein.

Claims

1. a kind of be used for the wireless charger to rechargeable device wireless charging, the wireless charger includes：

Wireless power transmitter, is arranged at least one charged area produce wireless charging electric field；

Transceiver, is arranged to communicate with the rechargeable device；And

Controller, is arranged to be based at least partially on the transmission power level detected of the wireless charger with indicating The comparison of at least one predeterminated level of at least one saturation conditions, by initiate the wireless charger with it is described chargeable Disconnecting for communication link between device, promotes to avoid the rechargeable device and the wireless charger and at least one The interconnection of other individual wireless chargers.

2. wireless charger according to claim 1, wherein, disconnected described in initiation described in being also based at least partially on The comparison of the change through request of the transmission power level and transmission power that detect.

3. wireless charger according to claim 2, wherein, the change through request of the transmission power is corresponding to following At least one of in：When at least one described saturation conditions indicates maximum when can allow transmitter power level for increased The request of power level；Or when at least one described saturation conditions indicates that most I allows transmitter power level for drop The request of low power level.

4. wireless charger according to claim 1, wherein, the controller is further configured to detect the hair Power level is penetrated, and by the transmission power level detected with indicating described at least one described saturation conditions at least One predeterminated level is compared.

5. wireless charger according to claim 1, wherein, at least one described predeterminated level includes indicating peak power First predeterminated level of saturation conditions indicates at least one in the second predeterminated level of minimum power saturation conditions.

6. wireless charger according to claim 1, wherein, the controller is further configured to detect whether to deposit In at least one described saturation conditions, and initiate described disconnect after at least one described saturation conditions is detected the presence of and connect Connect.

7. wireless charger according to claim 6, wherein, the controller is further configured to detecting State and disconnected described in initiating after at least one saturation conditions predetermined hold-time section.

8. wireless charger according to claim 7, wherein, the controller is further configured in interconnection Made a distinction between condition and the non-crossing condition of contact that wherein there is at least one saturation conditions, and the controller It is further configured to not initiate the wireless charger then from described chargeable if there is the non-crossing condition of contact Device is disconnected.

9. wireless charger according to claim 1, wherein, at least one described predeterminated level includes indicating peak power First predeterminated level of saturation conditions indicates at least one in the second predeterminated level of minimum power saturation conditions, it is described most High-power saturation conditions includes transmission power at the first power level or above, and the minimum power saturation conditions Including transmission power at the second power level or under it.

10. wireless charger according to claim 9, wherein, first power level, which corresponds to maximum, can allow water It is flat, and second power level is corresponding to most I tolerable injury level.

11. wireless charger according to claim 1, wherein, the controller is further configured to for predetermined Period changes the transmission power with scheduled volume, and disconnects the hair for being also based at least partially on and detecting described in initiation The change detected for penetrating power level is compared with predetermined amount of.

12. wireless charger according to claim 11, wherein, it is described that the controller is further configured to selection Scheduled volume and the period, with avoid adversely affecting power transmitted from the wireless charger it is described to being appropriately coupled to The rechargeable device of wireless charger.

13. a kind of method of the interconnection for the rechargeable device for promoting to avoid to communicate with wireless charger, methods described includes：

Detect the transmission power level of wireless charger；

By the transmission power level detected with indicating that at least one predeterminated level of at least one saturation conditions is compared Compared with；And

It is based at least partially on the presence or absence of at least one described saturation conditions, initiates in the wireless charger and described fill Communication link between electric installation is disconnected.

14. method according to claim 13, wherein, disconnected described in initiation and be also based at least partially on what is detected Transmission power level and the comparison of the change through request of the transmission power from the rechargeable device.

15. method according to claim 14, wherein, the change through request of the transmission power corresponds in following item At least one of：When at least one described saturation conditions indicates maximum when can allow transmitter power level for increased power The request of level；Or when at least one described saturation conditions indicates most I when allowing transmitter power level for reduction The request of power level.

16. method according to claim 13, wherein, at least one described predeterminated level includes indicating peak power saturation First predeterminated level of condition indicates at least one in the second predeterminated level of minimum power saturation conditions.

17. method according to claim 16, wherein, the peak power saturation conditions includes the transmission power most Greatly can at tolerable injury level or above, and the minimum power saturation conditions includes the transmission power and allowed in most I At level or under it.

18. method according to claim 13, wherein, initiate it is described disconnect be included in detect the presence of described at least Described disconnect is forced after one saturation conditions.

19. method according to claim 18, wherein, initiate described disconnect and further comprise described in detect extremely Described disconnect is forced after a few saturation conditions predetermined hold-time amount.

20. method according to claim 13, further comprises in interconnection condition and wherein in the presence of described at least one Make a distinction, and if there is the non-crossing condition of contact, then do not send out between the non-crossing condition of contact of individual saturation conditions Play the wireless charger disconnecting from the rechargeable device.

21. method according to claim 13, further comprises, the transmitting is changed with scheduled volume for predetermined amount of time Power, and the change detected of the transmission power level detected is compared with the scheduled volume, wherein sending out Rise it is described disconnect also be based at least partially on by the change detected of the transmission power level detected with it is described The result of the comparison of scheduled volume.

22. method according to claim 21, further comprises, the scheduled volume and the period are selected, to avoid Power is negatively affected to transmit to the rechargeable device for being appropriately coupled to the wireless charger from the wireless charger.

23. method according to claim 13, wherein, the transmission power water as described in the wireless charger perform detection Disconnected described in the transmission power level detected described in flat, comparison and initiation.

24. method according to claim 13, wherein, the transmission power water as described in the rechargeable device perform detection Disconnected described in the transmission power level detected described in flat, comparison and initiation.

25. method according to claim 13, wherein, the transmission power water as described in the wireless charger perform detection Flat, the relatively more described transmission power level detected and at least one in disconnecting described in initiating, and by it is described can Transmission power level described in charging device perform detection, the transmission power level detected described in comparison and initiate described disconnected Open at least other one in connection.

26. a kind of wireless charger, including：

Device for producing wireless charging electric field at least one charged area；

For the device communicated with rechargeable device；And

For being based at least partially on the transmission power level detected of the wireless charger with indicating at least one saturation It is the comparison of at least one predeterminated level of condition, logical between the wireless charger and the rechargeable device by initiating Believe disconnecting for link and promote to avoid the rechargeable device and the wireless charger and at least one other wireless The device of the interconnection of charger.

27. wireless charger according to claim 26, wherein, the device for being used to produce wireless charging electric field includes nothing Linear heat generation rate antenna and the wireless power transmitter coupled to the wireless power antenna, and wherein it is described be used for it is described The device of rechargeable device communication includes communication antenna and the transceiver coupled to the communication antenna.

28. wireless charger according to claim 26, wherein, it is described to be used to promote to avoid the rechargeable device and institute Stating the device of the interconnection of wireless charger and at least one other wireless charger includes controller, and the controller It is arranged to detect transmission power level, and by the transmission power level detected with indicating at least one described saturation bar At least one described predeterminated level of part is compared.

29. wireless charger according to claim 26, wherein, it is described to be used to promote the device for avoiding interconnection also extremely Be at least partly based on the transmission power level detected and the transmission power from the rechargeable device through request The comparison of change and initiate described disconnect.

30. a kind of non-transient computer-readable media, including code, the code cause wireless charger upon being performed：

Wireless charging electric field is produced at least one charged area；

Communicated with rechargeable device；And

The transmission power level detected of the wireless charger is based at least partially on indicating at least one saturation conditions At least one predeterminated level comparison, by initiating the communication chain between the wireless charger and the rechargeable device Disconnecting for road and promote to avoid the rechargeable device and the wireless charger and at least one other wireless charger Interconnection.